Private investigator Martha Holmes is falling out of love and back into her life – or so she thinks, until a decade-old missing persons case comes her way. Four teenage girls have been missing for ten years, and their families have never given up looking. Desperate, Thomas Remmy turns to Martha, relying on her solid reputation to find some answers about his sister.

Martha isn't so sure she can carry the weight of these girls' lives and what their disappearances have done to the community, especially when she discovers there are more victims. The shambles of her marriage have left her uncertain of her capabilities and unsure of who she even is. She elicits the help of her best friend, Daisy, to ensure the community hasn't forgotten Ottawa's lost girls. Is there a chance to find them alive, still, or will Martha deliver the news she dreads most? As she sorts through leads that aren't what they seem, and as more lives are endangered, it becomes apparent this suspect hasn't forgotten the girls either – and might not let Martha get to the truth, or to them.